236 MORPHOLOGY AND EVOLUTION
Mar. Chlmpanzea (r.tr. 43 j Gorilla
Superior prof ua da \ Superior prof unda (S.P.A.) Profunda brachii Inferior ,, Muscular to the fiexor Posterior collateral
muscles pi.A.) Nutrient .. ... Arteries to brachialis Radial collateral
| anticus (Br.A.)
Anastomocic ..! Arteries to biceps (Bi.) .. Superiorulnarcollateral Radial .. .. [Articular to the elbow Middle ,, ,,
: joint (Art.A.) Ulnar .. .. Arteries to the flexors of Inferior ,,
i the forearm (superficial and deep) (D.F.: S.F.M.)
Arteries to the extensors of Superior ulnar recurrent ; the wrist (Ext. MA.)
Radial recurrent (K.R. A.)
Radial artery (B.A.) ..
Ulnar arterjr (U.A.) ..
The Radial Artery (,fig. 43) may be superficial or deep. It is divisible into three parts as in Hana part in the forearm, a part on the trapezium, and apart in the hand. The branches in the Chimpanzee differ in several ways from those in Man, as can be seen from the following
Man I Chimpanzee (flg. 43)
Radial recurrent Superficialis voice Anterior radial carpal Muscular
Superficialis volse (S.T.A.) Anterior radial carpal (A,B.C.A,) Muscular to the superficial flexors Muscular to the supinator brevis.
Pare II. Part II.
Dorsal carpal arteries (D.G.B.) Muscular to the first dorsal inter-osseous (D.L3I.)
Raditilis iadicis Princep?. pollicis
Part III. To thenar muscles (T.A.) To first dorsal interosseous muscle To adductor muscles To lumbricales
To contiguous sides of pollez and index